PLEASE NOTE: All On-Demand sessions will not actually take place at the date and time below, we will be sending out access to these sessions the Monday before the conference starts and they will be available to watch on your own time for a month after the conference!

**This Agenda is Subject to Change**
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Saturday, February 12 • 3:00pm - 8:00pm
*Comprehensive characterization of M777 Howitzer noise exposure: clarifying the dose in the dose-response relationship.

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Substantial hearing losses have been observed among Service Members firing M777 Howitzer cannons, especially after deployments with repetitive fire missions. The study to be presented, referred to as Characterization of Acute Short-term Military Population Auditory Shifts (CHASMPAS), has extensively measured both noise exposures and hearing performance during numerous live-fire exercises with the M777. Here we will present detailed data on the M777 acoustic environment, including the results of advanced noise-dosimetry technology and blast over-pressure measurements, coupled with documentation of the type and quantity of munitions fired during each exercise and descriptions of the administrative and engineering controls in use. Results of auditory function tests will also be presented, along with longitudinal data from medical records. We will close with a discussion of how these data may be used to improve estimates of noise hazards in operational settings, identify opportunities for additional prevention efforts, and unravel the dose-response relationship between noise and hearing loss.


Christopher Smalt, Ph.D

Technical Staff, MIT Lincoln Laboratory
Dr. Smalt is a technical staff member in the Human Health & Performance Systems Group at the Massachusetts Institute of Technology Lincoln Laboratory. His current work focuses on computational modeling of hearing damage mechanisms and the effect of noise exposure on hearing and cognitive... Read More →
avatar for Julieta Scalo, PhD, PharmD

Julieta Scalo, PhD, PharmD

DoD Hearing Center of Excellence
Dr. Scalo leads the statistical analysis team of the Department of Defense Hearing Center of Excellence (HCE) and is the Principle Investigator for the Defense Epidemiology and Economic Burden of Hearing Loss Study (DEEBoHLS). Since joining the HCE in 2017, her work has included market... Read More →
avatar for Quintin Hecht, AuD

Quintin Hecht, AuD

Research Audiologist, DoD Hearing Center of Excellence
Quintin Hecht, AuD, is a research audiologist and project manager for the Department of Defense (DoD) Hearing Center of Excellence (HCE) at Joint Base San Antonio-Lackland, Texas. Dr. Hecht joined the DoD HCE in 2016 and also serves as an Army Reserve Audiologist for the Army Public... Read More →

Saturday February 12, 2022 3:00pm - 8:00pm CST